1. How many moles of CuO are needed to react with 5.9 moles of CO2 2CuO-C--->2Cu+CO2

2. How many moles of Fe2O3 were used to produce with 11.5 moles of CO2
3Fe2O3+CO--->2Fe3O4+CO2

3.If 6.3 moles of CO2 were produced, how many moles of O2 were used?
CH4=202>CO2+2H2O

Please help.

What type of electromagnetic radiation has a shorter wavelength than blue light

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons